Get ready for a dazzling celebration with the Lighted Birthday Cake Topper! The twinkling retro sign with LED lights is the perfect way to add some extra fun to your next birthday bash. Just place it in the cake and press the button on the back for a dazzling 45 second light show. Sing your favorite “happy birthday” tune to add to the festivities! Batteries included. 5 ½” H x 3 ½” W. Plastic.